[vtkusers] Bug in vtkTextActor for accentuated characters?
pof
jd379252 at gmail.com
Wed Sep 8 17:09:12 EDT 2010
Roger,
I've just tested the UTF8 patch, and yes it also works in my case.
This is great, it seems that all these characters problems (shadow +
accentuated characters) are solved now.
Hopefully, these patches will be included in the next release.
Thanks a lot for your help.
Pof
Le 08/09/2010 22:21, Roger Bramon Feixas a écrit :
> Thank you Pof to test it! Now, I hope it will be applied to the dev
> branch.
>
> Yes, the problem with accentuated characters is already solved.
> Therefore, next VTK release will not have that problem. However, if
> you are interested on it now, you can apply this patch:
> http://vtk.org/gitweb?p=VTK.git;a=patch;h=331a44656276882766248c1f8e338434b40226ef.
>
> Let me know if it works.
>
> Roger
>
> On Wed, Sep 8, 2010 at 1:18 PM, pof <jd379252 at gmail.com
> <mailto:jd379252 at gmail.com>> wrote:
>
> Hi Roger,
> I applied your patch to vtk5.6.0, and this fully solve the shadow
> problem, great!
> Still I 've got this problem with accuentuated characters (which
> of course was your patch was aiming to solve). If I understand
> well your reponse, this is already solved in the dev branch, am I
> correct?
> Pof
>
> Le 06/09/2010 08:52, Roger Bramon Feixas a écrit :
>> Hi Pof,
>>
>> Since VTK 5.2.0, vtkTextActor is rendered using glyphs instead of
>> OpenGL. I also had that problem but it was solved in that commit
>> http://vtk.org/gitweb?p=VTK.git;a=commit;h=331a44656276882766248c1f8e338434b40226ef
>> when UTF8 text rendering was enabled. It's after VTK 5.6 was
>> released.
>>
>> On the other hand, I suppose you still have problems rendering
>> text with shadow, as you reported in that issue:
>> http://vtk.org/Bug/view.php?id=9618. I tried to solve it and I
>> attached a patch in that issue waiting for feedback. It would be
>> wonder if you could test it and let me know if it works well.
>>
>> Thanks,
>>
>> Roger
>>
>>
>> On Fri, Sep 3, 2010 at 2:12 PM, Pof <jd379252 at gmail.com
>> <mailto:jd379252 at gmail.com>> wrote:
>>
>> Hi all,
>>
>> I am having trouble displaying accentuated characters in
>> vtkTextActor with vtk5.6.0 under MS-VC++2005.
>> Here below is an exemple that reproduces the problem, by
>> printing the same string than contains accents "é,è,à".
>> When I run this small prog, as a result I obtain that
>> accentuated characters (é,è...) are :
>> - correctly displayed when used in a vtkScalarBarActor title,
>> - not displayed when incorporated in vtkTextActor.
>>
>> Any idea where does this come from and how to solve it?
>>
>> As an additional comment, this used to work correctly under
>> vtk5.0.x, it is only broken from vtk5.2.x up to vtk5.6.0.
>>
>> Thanks
>> JD
>>
>>
>> //////////////////////////////////////////////////////
>> ////////////////// vtkTextActor bug //////////////////
>> //////////////////////////////////////////////////////
>> #include "vtkActor.h"
>> #include "vtkRenderer.h"
>> #include "vtkRenderWindow.h"
>> #include "vtkRenderWindowInteractor.h"
>> #include "vtkCamera.h"
>> #include "vtkTextProperty.h"
>> #include "vtkTextActor.h"
>> #include "vtkActor2D.h"
>> #include "vtkLookupTable.h"
>> #include "vtkScalarBarActor.h"
>>
>> int main()
>> {
>> // Tested string
>> char text[] = "Test: é, è, à";
>>
>> // Create an example text actor
>> vtkTextActor *textActor = vtkTextActor::New();
>> textActor->SetInput(text);
>>
>> textActor->GetPositionCoordinate()->SetCoordinateSystemToNormalizedViewport();
>> textActor->SetPosition(0.50,0.50);
>> textActor->GetTextProperty()->SetFontSize(30);
>> textActor->GetTextProperty()->SetJustificationToCentered();
>> textActor->GetTextProperty()->SetColor(1, 0, 0);
>>
>> // Create a Lut
>> vtkLookupTable *Lut = vtkLookupTable::New();
>> Lut->SetHueRange (160.0/240.0, 0.0);
>> Lut->SetSaturationRange (1.0, 1.0);
>> Lut->SetValueRange (1.0, 1.0);
>> Lut->SetTableRange (0,100);
>> Lut->Build();
>>
>> // Create a ScalarBarActor
>> vtkScalarBarActor *scalarBar = vtkScalarBarActor::New();
>> scalarBar->SetTitle(text);
>> scalarBar->SetLookupTable(Lut);
>> scalarBar->SetHeight(0.5);
>> scalarBar->SetWidth(0.1);
>> scalarBar->SetPosition(0.10,0.01);
>> scalarBar->SetPosition2(0.80,0.1);
>> scalarBar->SetOrientationToHorizontal();
>>
>> // Create the graphics structure
>> vtkRenderer *ren = vtkRenderer::New();
>> vtkRenderWindow *renWin = vtkRenderWindow::New();
>> renWin->AddRenderer(ren);
>> renWin->SetSize(600, 600);
>> vtkRenderWindowInteractor *iren =
>> vtkRenderWindowInteractor::New();
>> iren->SetRenderWindow(renWin);
>>
>> // Add the actors to the renderer, set the background and
>> size
>> ren->AddActor(textActor);
>> ren->AddActor(scalarBar);
>> ren->SetBackground(0.1, 0.2, 0.4);
>> ren->ResetCamera();
>> ren->GetActiveCamera()->Zoom(1.0);
>> renWin->Render();
>>
>> // Starts the event loop
>> iren->Start();
>>
>> // Do some cleaning
>> textActor->Delete();
>> Lut->Delete();
>> scalarBar->Delete();
>> ren->Delete();
>> renWin->Delete();
>> iren->Delete();
>>
>> return 0;
>> }
>>
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